One third of Vietnam’s high school students failed their graduation exams, a year after the country declared war on cheating on the tests, state media reported Monday June 18. The Labour newspaper quoted a report by the Ministry of Education and Training as saying that only 67.5% of the students passed their graduation exams, down from 92% last year.

The southern commercial hub of HCM City had the highest success rate, with 95% of its students passing the exams. Hanoi, the Vietnamese capital, ranked fourth with 86%. The northern province of Tuyen Quang finished at the bottom of Vietnam’s 64 cities and provinces, with only 14% of its students passing the exams, the newspaper said. Ministry officials were not available for comment Monday June 18.

The government declared a war on cheating last year, after a teacher from northern province of Ha Tay said that cheating was widespread at his school, a disclosure that was widely covered in the state media.

The ministry sent some 6,000 officials on inspection missions to police the national graduation exams taken in late May. The roughly 320,000 students who failed their exams will retake them in late August, the newspaper said.